Math @ Duke

Publications [#243282] of Paul S. Aspinwall
Papers Published
 Aspinwall, PS; Gross, M, Heteroticheterotic string duality and multiple K3 fibrations,
Physics Letters B, vol. 382 no. 12
(August, 1996),
pp. 8188, Elsevier BV [doi]
(last updated on 2019/04/20)
Abstract: A type IIA string compactified on a CalabiYau manifold which admits a K3 fibration is believed to be equivalent to a heterotic string in four dimensions. We study cases where a CalabiYau manifold can have more than one such fibration leading to equivalences between perturbatively inequivalent heterotic strings. This allows an analysis of an example in six dimensions due to Duff, Minasian and Witten and enables us to go some way to prove a conjecture by Kachru and Vafa. The interplay between gauge groups which arise perturbatively and nonperturbatively is seen clearly in this example. As an extreme case we discuss a CalabiYau manifold which admits an infinite number of K3 fibrations leading to infinite set of equivalent heterotic strings.


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